Testing of cryogenic photomultiplier tubes for the MicroBooNE experiment

T. Briese, L. Bugel, J. M. Conrad, M. Fournier, C. Ignarra, B. J.P. Jones, T. Katori, R. Navarrete-Perez, P. Nienaber, T. McDonald, B. Musolf, A. Prakash, E. Shockley, T. Smidt, K. Swanson, M. Toups